Fluid-pressure-cushioning device.



l e. E. v.'SQIIIRES.

FLUID PRESSURE GUSHIONING DEVICE.

APPLICATION FILED DEG.21, 1907.

Patented Feb. 16, 1909.

INVENTOR y/"f" A AT'` I51" CharlcsE Squyres BY www AfrrYS;

the sai CHARLES E. SQUIRES, 0F CLEVELAND, OHIO.

FLUID-PREBSURE-CUSBIONING DEVICE.

Specification of Letters Patent.

Patented Feb. 16, 1909.

Application led December 21, 1907. Serial No. 407,523.

To all whom 'it may concern:

Be it known that I, CHARLES E. SQUrREs, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Fluid-Pressure- Cushioning Devices, and do declare that the followin is a full, clear, and exact descri tion of t e invention, which will enable etliers skilled in the art to which it appertains to make and use the same.

My invention relates to a cushioning device adapted to operate in the feed water line of steam Generators in automobiles, and the ob'ect of the invention is to provide adevice w ich will relieve hammering and shocks in saidline.

In the accompanying drawings, Figure 1 is a vertical sectional elevation of all the parts in normal relation, and Fig. 2 is a side elevation thereof partly in section, and showin@r the parts as under fluid pressure.

lt is common practice at this time to emloy feed pumps to force the water forward into the steam glenerator, and the line of pipe is supplied' wit suitable check valves ere and there to prevent back flow. These valves are necessarily ver 'active because in at least one make of mac lne in which this device is used the pump runs at a rate of twelve to eighteen hundred strokes to the minute. Under the usual heavy pressure from the pump and with ,this rapidly repeated action, the wear and tear on the valves is 've severe, and without the necessary relief they are also ver noisy. Now, toremedy these conditions, have. provided an automaticrelief, whichis adapted to ab# sorb or neutralizethe. excess pressure in the 'watersupply line which otherwise reacts so violentl upon the valves and the pump, and automatic device consists the cushioning attachment herein shown, comprising a spring inclosing shell or.r` casing B and cylinder C, which has a tubular externally threaded stem c adapted to be `removably en aged with pipe jomt or coupling E. The sai joint or coupling will be un erstood as formin a part of the water feed pipe.

Three independent active members or arts are located within the housing or casing B and c linder C comprising a fluid pluner D, a su stantially barrel shaped plunger and spring S. The said plungers work in i at its bottom, a su opposite directions against each other and have the re uisite lay together in cylinder C. Thus, p unger has a head 2 mounted for the most lpart in the lower open end of plunger barre C and otherwise bears against the wall of cylinder C, through flange or rib 4 thereon, while plunger barrel G has a closed outer end or top forming a rest for spring S. The barrel or body portion of said art G fits comfortably in cylinder C to sli etherein, and plunger D has a lateral flan e or rib 6 about its bottom between wln'c and the edge of barrel G I interpose hemp or equivalent packing rings 7. Fluid pressure from beneath holds plunger D in working relation with barrel G, and guide stem 8 on said plunger projects through the otherwise closed top 9 of said barrel.

In action the arts D and G work together as one part, an under fessure of the fluid said parts will be raise more or less from cylinder C, say as seen in Fig. 2, in which case they are subject to counter pressure spring S and as thus suspended are respon'- sive tothe pulsations in the fluid or water resulting from the rapidly repeated strokes of the pump and which would otherwise work themselves out in shocks and hammerin s in pump and valves as hereinbefore descri ed;

The packing rings 7, interposed `as they are between the two parts D and G, and betweenhead 2 of the plunger inside and the wall of cylinder C outside, make a perfectly tight bearing' so far as leaka e of water is concerned and are practicall indestructible. It will be understood that t e feed water is liable to ireach approximately to the boiling would soon be destroyed under such conditions, but heat does not injuriously affect hem which will endure protracted usage.

Y at I claim is 1. A fluid pressure cushioning device comprising'a cylinder open at one end for the inflow of fluid, a spring pressed plunger fittin closely about the Wall'of said cylinder an havin a flange seated thereon, a fluid actuated pilunger seated a ainst the opposite end of said spring presse plunger and a spring conned over said spring pressed plunger.

2. A fluid pressure cushioning device comprising a suitable c linder with a fluid inlet llistantially barrel shaped fpoint in long runs and leather or like packing lunger-slidably mounted inr said cylinder In testimony whereof I sign this specifirom the tollallddhalng a closed Egger end( cation in the presence of two witnesses.

aSl'lnO 6 B'OVeSal c, eran beaginggon said, pluner, a Afluiii actuated CHARLES E .SQUIRES' 5 plunger mountedin t erlower end of said Witnesses: l y

'barrel shaped plunger and packing between R. B. MOSER, said'plungers. F. C. MUssUN. 

